The Horizon: A Journal of the Color Line was a monthly periodical in publication during the years 1907 to 1910. It was the primary communication outlet for the Niagara Movement, and was edited by African-American editor, scholar and author W. E. B. Du Bois. The magazine was written primarily by African Americans and addressed many African-American themes. After the National Association for the Advancement of Colored People (NAACP) was formed, publication ceased as Du Bois turned his attention to the NAACP's magazine, The Crisis, which he also edited. Prior to The Horizon, Du Bois published a comparable magazine, Moon Illustrated Weekly, which lasted for one year in 1906.